EP 0417782 A2 19910320 - Adaptive process control system, especially for control of temperature of flowing fluids.
Title (en)
Adaptive process control system, especially for control of temperature of flowing fluids.
Title (de)
Adaptives Prozessregelungssystem, insbesondere zur Temperaturregelung für strömende Flüssigkeiten.
Title (fr)
Système de commande adaptative de processus en particulier pour la régulation de température de fluides en écoulement.
Publication
Application
Priority
US 40801689 A 19890915
Abstract (en)
A control system (method and apparatus) is adaptive on-line with changing process conditions, for example, the specific heat of a liquid used in a process. The system regulates a variable of a process (temperature of the liquid used in the process) and has a fast dynamic response to handle temperature transients while adapting to changing process conditions. The system uses feedforward and feedback control loops, which in the case of the process involving the temperature control of a liquid are respectively responsive to the temperature of the liquid before and after a control point. The system exercises adaptive control of the feedforward control function from the feedback loop. The system is preferably implemented with a digital computer. The fast dynamic response is enhanced by applying microwave energy from a microwave generator to heat the liquid at the control point with the feedforward and feedback control loops controlling the microwave generator.
IPC 1-7
IPC 8 full level
G05D 23/00 (2006.01); G05B 13/02 (2006.01); G05D 23/19 (2006.01); G05D 23/20 (2006.01)
CPC (source: EP US)
G05D 23/1931 (2013.01 - EP US); G05D 23/20 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0417782 A2 19910320; EP 0417782 A3 19921014; EP 0417782 B1 19960814; DE 69028054 D1 19960919; DE 69028054 T2 19970123; JP H03142501 A 19910618; US 5130920 A 19920714
DOCDB simple family (application)
EP 90117651 A 19900913; DE 69028054 T 19900913; JP 24599790 A 19900914; US 40801689 A 19890915